I recently had a bit of a problem getting one of my zones going. The advice given by Forum members was very quick & helpful in finding a very basic cause for my problem. While waiting for replies I browsed many threads and saw several occurrences of an issue near & dear to my heart; disappointed with my system. I also noticed that several of the pro installers in this forum would get pretty defensive. After a few frustrating years with my system I thought I’d throw in my 2 cents worth. I had my share of disappointments with my system and when I was cold and frustrated I would get pretty negative. Three bloody cold (N Saskatchewan) winters later everything has settled down and here’s where I’m at. I still grumble that my system runs so much but then I remember that the system is designed for -32C and I understand it is expected that the system should run 100% of the time when you get down to design temp. We had a lot sub -30C the past three winters. It’s been suggested to me that this type of heating system is pushing the limits in this climate. Maybe the Pros have something to add here. Another source of frustration is the recovery time. My house is completely insulated with Walltite Eco. At -25C it takes about 45 minutes for the house to drop 1 degree but takes 3+ hours to recover that one degree. Still don’t understand this but since I stay cozy & warm should I care?. Operating cost was another source of annoyance. The prevailing marketing hype will have you believe that your geothermal operating cost will be 25%of conventional heating costs and that’s what I expected at first. I understand that this is a possibility in moderate to mild climates. In our climate, in a 2,000+ sq. Ft. house I’m told that one is very lucky to get in under $4,000 (Cdn) for combined power and heat. My annual costs are averaging about $3,400 so I think I’m doing pretty good; my initial expectations where probably a bit high. Many people have reported a number of equipment failures. After three years of pretty heavy winter running I have not yet experienced any type of failure. My system consists of Climate Master 5 ton TMW & 3 ton TTW. The water-water unit is supported by a 90 gallon buffer tank and supplies 5 zones of in floor heat. Total area heated is 5,000 sq. Ft. (1800 air & 2575 house/625 garage water) The house is a 2150 sq ft bungalow with a full heated walkout basement.I might add that natural gas is not an option in my area. I’ll be interested in what kind of feedback results. One more bone for everyone to chew on; if I was to do it again I wonder if I should choose WaterFurnace?